Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: ZZZZDUESXE846
name: The Chiltern District Council (Land Between Nashleigh Hill, Cherry Tree Walk and Hillcroft Road, Che
tree-preservation-order: undefined
TPO/1987/027
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.598328 51.717618,-0.598152 51.717729,-0.598272 51.717809,-0.598322 51.717831,-0.598523 51.717867,-0.598553 51.717848,-0.598675 51.717699,-0.598776 51.717604,-0.599020 51.717417,-0.599186 51.717320,-0.599632 51.717087,-0.599847 51.716998,-0.599888 51.716988,-0.600123 51.716967,-0.600371 51.716932,-0.600573 51.716874,-0.600535 51.716819,-0.600487 51.716777,-0.600181 51.716634,-0.600038 51.716627,-0.599987 51.716637,-0.599680 51.716827,-0.599691 51.716827,-0.599385 51.717000,-0.599488 51.716939,-0.599268 51.717064,-0.599156 51.717103,-0.599044 51.717154,-0.599025 51.717174,-0.598952 51.717210,-0.598973 51.717231,-0.598973 51.717255,-0.598947 51.717282,-0.598891 51.717307,-0.598895 51.717312,-0.598697 51.717402,-0.598635 51.717372,-0.598466 51.717452,-0.598457 51.717445,-0.598254 51.717537,-0.598328 51.717618)))
point: POINT (-0.599321 51.717191)
notes
organisation
entry-date: 2010-02-18
start-date: 2010-02-18
end-date

Your dataset is missing the tree-preservation-order column.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.